Metal-heating furnace.



W. S. ROCKWELL.

METAL HEATING FURNACE.

APPLICATIN FILED AUQ. 918.

aeled; Bee.

` W. S. ROCKWELLQ .METAL HEATING FuaNAcE. APPLICATION FILED AUGZS. l9i8.

LQBSOQ. A Patented Dec,1?,1918.

innesca furnaces having;- a series of vent-dues, and avoids the application and manipulation of dampers upon all of such iiues.

Having thus set forth the nature of the invention what is claimed herein is:

1. A furnace having a heating-chamber with a combustionchamber beneath the same, a series of flaming gas inlet-passages extended from the combustion-chamber into the4 heating-chamber at a series of points along the edge of its floor, a series ot' ventilues extended upwardly in the side-wall of the heating-chamber and a series of ventopenings connecting the lower part of the heatingchamber with the said vent-lines thus securing av distribution of the gases throughout the heating-chamber before their escape therefrom, and a collection-flue connected to the tops of the vent-fines and having a vent therefrom with damper to control the discharge of the spent gases.

2. A furnace having a heating-chamber with -a combustionchamber beneath the same, a series of'aiuing gas inlet-passages extended from the combustiorrchamber into the heating-chamber at a series of points along the opposite edges of its floor, a series of vent-ues extended upwardly in the sidewalls at a series of points along the length,

of the heating-chamber and a series of vent openings atv dierent points along its length connecting tie lower part of the heatingcharnher with the rpective vent-uee, whereby the hot gases are admitted to and discharged troni the lower part ots the heetinb-chamber at both of its sides, and a collection-lue connected to the tops of the vent- -tlues at each side and having a vent there` from with. damper to control the discharge of the spent 3. A furnace. having a heating-chamber with a combustion-chamber beneath the saine, vent-flue openings extended from the heatingchamber into its side-walls at the bottom thereof and rent-fines extended therefrom upwardly within the walls, ledges projected upwardly upon the door of the heating-chamber adjacent to the vent-line openings in the side-walls and such ledges projected above the vent-flue openings, col lection-flues connecting the tops of the ventiiues, with vents extended from the said collection-tiues, and dempers applied to the said vents, to control the escape of the gases therefrom.

4. A furnace having ai heating-chamber with ledges disposed upon thejloor o'the chamber adjacent to its (side-walls, a coinbustioiichamber beneath the heating-chamher with perorations extended from the saine through the Jdoor of the heating-chamber between the said ledges, a series of vent flue openings extended downward into each ot the ledges and vent-fines extended upwardly there rom in the side-walls of the tended from the same through the ledges next the side-walls to heat the upper part of the heating-chamber, and vent-openings in the top of the ledges intermediate to the saidpassages, with vent-lines extended upwardly therefrom to vent the heatingchamber near the bottoni thereof.V

6. A masonry furnace having a rectangular heatingchamber with a combustioncliamher beneath the same, luid fuel-burners to supply burning gases to the said comhus' 85 tion-chamber, a series or aining gas inletpassages extended from the combustionchamber into the heating-chamber at a series of points along the edge of its ioor, a

series of ventues in the hricl side-walls of the furnace extended upward from the lower part et the heating-chamber at aseries-o points in its length. a collection-Hue connected to the tops o1? the vent-fines and having a vent therefrom with damper to control the discharge of the spent gases, a casing ar ranged over the said damper with gas-outlet upon the casing, whereby the spent ases circulate through the casing, an air-con ucting pipe arranged within the casing to he heated by the gases, and means for supplying air to the said pipe and delivering the heated air therefrom to the fuel-burners.

A furnace having a heating.- chamber 4 with means for supplying tlarnlng gases 105 thereto, vent ilue-openin extended from the heating-cheminer into its side-walls near the hottorn thereof, and vent-fines extended therefrom upwardly within the walls, a coli lection-ilne connected to the tops of the` ventiiues the said collection flue havinY two vents one near each of its opposite' en s, the said rents being provided each with a damper, ur'hereloy the escape of spent gases from either end oit the heating-chamber may he varied to increase or diminish the heat in either end of said chamber.

ln testimony whereof I have hereunto set m hand.

y WALTER S. ROCKWELL. 

